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Precise and timely traffic flow prediction plays a critical role in developing intelligent transportation systems and has attracted considerable attention in recent decades. Despite the significant progress in this area brought by deep…

Machine Learning · Computer Science 2022-05-03 Wenzheng Zhao

Extracting significant places or places of interest (POIs) using individuals' spatio-temporal data is of fundamental importance for human mobility analysis. Classical clustering methods have been used in prior work for detecting POIs, but…

Machine Learning · Computer Science 2018-07-03 Yunlong Wang , Bjoern Sommer , Falk Schreiber , Harald Reiterer

Accurate and timely traffic flow forecasting is crucial for intelligent transportation systems. This paper presents a novel deep learning model, the Spatial-Temporal Unified Graph Attention Network (STGAtt). By leveraging a unified graph…

Machine Learning · Computer Science 2025-08-26 Zhuding Liang , Jianxun Cui , Qingshuang Zeng , Feng Liu , Nenad Filipovic , Tijana Geroski

Deep neural networks have recently achieved considerable improvements in learning human behavioral patterns and individual preferences from massive spatial-temporal trajectories data. However, most of the existing research concentrates on…

Machine Learning · Computer Science 2022-11-18 Qiang Gao , Jinyu Hong , Xovee Xu , Ping Kuang , Fan Zhou , Goce Trajcevski

Contrastive self-supervised learning has recently benefited fMRI classification with inductive biases. Its weak label reliance prevents overfitting on small medical datasets and tackles the high intraclass variances. Nonetheless, existing…

Machine Learning · Computer Science 2022-07-19 Xuesong Wang , Lina Yao , Islem Rekik , Yu Zhang

Crowd counting is a challenging problem due to the scene complexity and scale variation. Although deep learning has achieved great improvement in crowd counting, scene complexity affects the judgement of these methods and they usually…

Computer Vision and Pattern Recognition · Computer Science 2022-04-18 Jiwei Chen , Wen Su , Zengfu Wang

The next point-of-interest (POI) prediction is a significant task in location-based services, yet its complexity arises from the consolidation of spatial and semantic intent. This fusion is subject to the influences of historical…

Information Retrieval · Computer Science 2024-04-09 Nan Jiang , Haitao Yuan , Jianing Si , Minxiao Chen , Shangguang Wang

Change Point Detection (CPD) methods identify the times associated with changes in the trends and properties of time series data in order to describe the underlying behaviour of the system. For instance, detecting the changes and anomalies…

Machine Learning · Computer Science 2021-03-08 Shohreh Deldari , Daniel V. Smith , Hao Xue , Flora D. Salim

Traffic flow forecasting on graphs has real-world applications in many fields, such as transportation system and computer networks. Traffic forecasting can be highly challenging due to complex spatial-temporal correlations and non-linear…

Machine Learning · Computer Science 2022-07-13 Aosong Feng , Leandros Tassiulas

Contrastive learning has been successfully leveraged to learn action representations for addressing the problem of semi-supervised skeleton-based action recognition. However, most contrastive learning-based methods only contrast global…

Computer Vision and Pattern Recognition · Computer Science 2023-02-07 Binqian Xu , Xiangbo Shu

We address the problem of video representation learning without human-annotated labels. While previous efforts address the problem by designing novel self-supervised tasks using video data, the learned features are merely on a…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Jiangliu Wang , Jianbo Jiao , Linchao Bao , Shengfeng He , Yunhui Liu , Wei Liu

With the rapid development of the mobile communication technology, mobile trajectories of humans are massively collected by Internet service providers (ISPs) and application service providers (ASPs). On the other hand, the rising paradigm…

Social and Information Networks · Computer Science 2021-11-11 Huandong Wang , Qiaohong Yu , Yu Liu , Depeng Jin , Yong Li

Traffic flow forecasting is a crucial task in urban computing. The challenge arises as traffic flows often exhibit intrinsic and latent spatio-temporal correlations that cannot be identified by extracting the spatial and temporal patterns…

Machine Learning · Computer Science 2022-02-02 Song Yang , Jiamou Liu , Kaiqi Zhao

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. While effective, these data-driven approaches rely on large amount of data annotation to achieve good performance, which stops…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Weizhe Liu , Nikita Durasov , Pascal Fua

Learning socially-aware motion representations is at the core of recent advances in multi-agent problems, such as human motion forecasting and robot navigation in crowds. Despite promising progress, existing representations learned with…

Machine Learning · Computer Science 2021-08-23 Yuejiang Liu , Qi Yan , Alexandre Alahi

Crowd trajectory prediction plays a crucial role in public safety and management, where it can help prevent disasters such as stampedes. Recent works address the problem by predicting individual trajectories and considering surrounding…

Artificial Intelligence · Computer Science 2026-03-20 Antonius Bima Murti Wijaya , Paul Henderson , Marwa Mahmoud

Urban flow prediction is a classic spatial-temporal forecasting task that estimates the amount of future traffic flow for a given location. Though models represented by Spatial-Temporal Graph Neural Networks (STGNNs) have established…

Machine Learning · Computer Science 2024-12-10 Haiyang Jiang , Tong Chen , Wentao Zhang , Nguyen Quoc Viet Hung , Yuan Yuan , Yong Li , Lizhen Cui

To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC). Our key finding is to learn such representations by separating…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-02 Jun Wang , Max W. Y. Lam , Dan Su , Dong Yu

Training image-based object detectors presents formidable challenges, as it entails not only the complexities of object detection but also the added intricacies of precisely localizing objects within potentially diverse and noisy…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Chandan Kumar , Jansel Herrera-Gerena , John Just , Matthew Darr , Ali Jannesari

Crowd scene analysis receives growing attention due to its wide applications. Grasping the accurate crowd location (rather than merely crowd count) is important for spatially identifying high-risk regions in congested scenes. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2020-01-28 Yao Xue , Siming Liu , Yonghui Li , Xueming Qian
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